The infamous "They stick all the jerks in tower one!" line.
The "Kickin' It" musical that Bart, Lisa, Maggie and Marge go to stars a man who's an Expy of Charlie Sheen. Many years later, Sheen is still dealing with problems involving drugs and run-ins with the law.
As punishment for his car being left in New York City, Homer's car will be thrown into the East River, which was known for its parasitic and hazardous conditions in 1997. Nowadays, the river has been cleaned up considerably and ironically enough, it would be far worse to throw it into the Hudson River, whose quality has severely declined in the years since this episode first aired.